这个简单的计算器能提供基本的加、减、乘、除四则运算，同时它还能识别为0的除数。还可支持12.365e+654的大数运算。-This simple calculator will provide the basic add, subtract, multiply, with the exception of four operations at the same time it can identify the divisor is 0. Can support large numbers of computing 12.365e+654.